Alternating current polarography of organic compounds. III. Chloranilic acid

1955 ◽  
Vol 8 (4) ◽  
pp. 472 ◽  
Author(s):  
B Breyer ◽  
HH Bauer
Keyword(s):  
Organic Compounds ◽  
Mercury Electrode ◽  
Alternating Current ◽  
Multilayer Adsorption ◽  
Chloranilic Acid ◽  
Adsorbed Film ◽  
Dropping Mercury Electrode ◽  
New Type ◽  
Surface Active

The behaviour of chloranilic acid at the dropping mercury electrode has been techniques of ordinary and of alternating current polarography. A new type of tensammetric wave has been encountered, which is probably an outcome either of multilayer adsorption and/or of a change in state of the adsorbed film. At the same time, a new tensammetric phenomenon, the exchange of one species of surface-active molecules against another, has been observed. Alternating current polarography can be used for estimating chloranilic acid at concentrations as low as 10-7M, whereas conventional polarography does not permit analysis at concentrations below 10-5M.

Alternating current polarography of Organic compounds. IV. Perinaphthenone

1955 ◽  
Vol 8 (4) ◽  
pp. 480 ◽  
Author(s):  
B Breyer ◽  
HH Bauer
Keyword(s):  
Organic Compounds ◽  
Mercury Electrode ◽  
Alternating Current ◽  
Multilayer Adsorption ◽  
Adsorbed Film ◽  
Polarographic Wave ◽  
Dropping Mercury Electrode

The behaviour of perinaphthenone at the dropping mercury electrode has been investigated by the combined techniques of conventional (D.C.) and alternating current (A.C.) polarography. Two D.C. steps were observed, but an A.C. polarographic wave was found only at the potential of the more positive D.C. step. Two tensammetric waves were also seen, one of which appears to be the outcome of multilayer adsorption or of a change in state of the adsorbed film.

Alternating current polarography of organic compounds. V. Quantitative treatment of the adsorption process

1956 ◽  
Vol 9 (1) ◽  
pp. 1 ◽  
Author(s):  
B Breyer ◽  
HH Bauer
Keyword(s):  
Organic Compounds ◽  
Adsorption Process ◽  
Adsorption Equilibrium ◽  
Mercury Electrode ◽  
Alternating Current ◽  
Qualitative Explanation ◽  
Calibration Curves ◽  
Adsorbent Surface ◽  
Dropping Mercury Electrode ◽  
Quantitative Treatment

Equations are derived to express the adsorption equilibrium subsisting at an adsorbent surface in the presence of two adsorbable species. These equations are applied to the case of the reduction of organic compounds at the dropping mercury electrode. It is well known that adsorption at the electrode can produce irreversibility in the D.C. step, and a qualitative explanation is provided. The same treatment is used to explain the shape of the A.C. calibration curves.

Tensammetry: A Method of Investigating Surface Phenomena by A.C. Current Measurements

1952 ◽  
Vol 5 (3) ◽  
pp. 500 ◽  
Author(s):  
B Breyer ◽  
S Hacobian
Keyword(s):  
Theoretical Basis ◽  
Mercury Electrode ◽  
Surface Phenomena ◽  
Current Voltage ◽  
Dropping Mercury Electrode ◽  
Adsorption Processes ◽  
New Type ◽  
Surface Active ◽  
Fundamental Equations ◽  
Active Substances

A new type of investigation into surface phenomena, "tensammetry", has been developed by superimposing a small sinusoidal A.C. voltage upon the direct potential applied to a dropping mercury electrode in the presence of surface active substances and measuring the resultant A.C. currents. Wave shaped current-voltage curves are thus obtained which have their origin in adsorption processes occurring at the electrode. These waves are attributed to the movement of surface active molecules in the region of "active space" near the electrode without actual electron transfer across the electrode boundary; that is, the electrode remains polarized with respect to U.C., but is depolarized with respect to A.C. The general properties of tensammetric waves of a number of organic compounds together with their effects on one another and on D.C. and A.C. polarographic waves have been investigated. The theoretical basis and the fundamental equations governing the tensammetric, process are derived and discussed.

scholarly journals Analysis of Cationic Surface Active Agents Using DME and Its Relevance to Their Adsorption

1987 ◽  
Vol 4 (1-2) ◽  
pp. 53-57
Author(s):  
J. Matysik ◽  
H. Kroszka ◽  
A. Persona
Keyword(s):  
Mercury Electrode ◽  
Analytical Determination ◽  
Surface Active Agents ◽  
Dropping Mercury Electrode ◽  
Surface Active

The paper describes an application of dropping mercury electrode (DME) for analytical determination of certain cationic surface active agents and their mixtures and presents obtained thermodynamical data of adsorption of investigated substances.

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